***** Description *****
This replication archive contains all data and code to replicate the main tables
and figures in "Voter Polarization, Strength of Partisanship, and Support for 
Extremist Parties" by Lawrence Ezrow, Margit Tavits, and Jonathan Homola.



***** File Overview *****
** R scripts **
EzrowTavitsHomola_PolarizationExtremism.R -- R script to generate Tables 1-3.


** Stata scripts **
EzrowTavitsHomola_PolarizationExtremism_Figures.do -- Stata script to generate 
Figures 2-3.


** Data files **
EzrowTavitsHomola_PolarizationExtremism_Data.dta -- The main dataset contains 
information on party and voter positions, levels of partisanship, the degree
of voter polarization, and other relevant variables. This dataset is used to
create the Tables and Figures in the text.



***** Additional Information *****
The following R packages were used to produce the results:
1) foreign version 0.8-67
2) sandwich version 2.3-4
3) psych version 1.6.9
4) stargazer version 5.2
5) xtable version 1.8-2
6) lmtest version 0.9-34



** Note **
In the manuscript, the standard error for the constant term in Table 2, Model
3 (Established Democracies) is reported incorrectly. The replication files
calculate the correct standard error. The estimate is still significant at the
99% level and all the conclusions discussed in the manuscript remain unaffected
by this change.



***** References *****
Ezrow, Lawrence, Margit Tavits, and Jonathan Homola. 2014. "Voter Polarization, 
Strength of Partisanship, and Support for Extremist Parties." Comparative 
Political Studies 47: 1558-1583.
http://dx.doi.org/10.1177/0010414013512605

Washington Post, Monkey Cage, August 15, 2014: "When does polarization matter?"
http://www.washingtonpost.com/blogs/monkey-cage/wp/2014/08/15/when-does-polarization-matter/